While 49 (20.1%) of 244 ALL patients were classified into non-NM (one PM and 48 IMs) phenotype for NUDT15, only seven (2.9%) IMs were identified for TPMT, reflecting ethnic variation of NUDT15 and TPMT variants, in a consistent manner (Table 3). The gene discussed is TPMT; the disease is acute lymphoblastic leukemia.